<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
 <title></title>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script type="text/javascript">　　
function getFileSize(filePath){
　 var fso = new ActiveXObject("Scripting.FileSystemObject");
　 alert(  "文件大小为："+fso.GetFile(filePath).size +"字节"  );
}
</script>　　
<body>　　
<INPUT TYPE="file" NAME="file" SIZE="30" onchange="getFileSize(this.value);">　　
</body>　

</html>

